70 lines
2.2 KiB
JavaScript
70 lines
2.2 KiB
JavaScript
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'use strict';
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exports.__esModule = true;
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const extname = require('path').extname;
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const log = require('debug')('eslint-plugin-import:utils:ignore');
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// one-shot memoized
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/** @type {Set<import('./types').Extension>} */ let cachedSet;
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/** @type {import('./types').ESLintSettings} */ let lastSettings;
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/** @type {(context: import('eslint').Rule.RuleContext) => Set<import('./types').Extension>} */
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function validExtensions(context) {
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if (cachedSet && context.settings === lastSettings) {
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return cachedSet;
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}
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lastSettings = context.settings;
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cachedSet = makeValidExtensionSet(context.settings);
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return cachedSet;
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}
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/** @type {import('./ignore').getFileExtensions} */
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function makeValidExtensionSet(settings) {
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// start with explicit JS-parsed extensions
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/** @type {Set<import('./types').Extension>} */
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const exts = new Set(settings['import/extensions'] || ['.js']);
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// all alternate parser extensions are also valid
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if ('import/parsers' in settings) {
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for (const parser in settings['import/parsers']) {
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const parserSettings = settings['import/parsers'][parser];
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if (!Array.isArray(parserSettings)) {
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throw new TypeError('"settings" for ' + parser + ' must be an array');
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}
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parserSettings.forEach((ext) => exts.add(ext));
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}
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}
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return exts;
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}
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exports.getFileExtensions = makeValidExtensionSet;
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/** @type {import('./ignore').default} */
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exports.default = function ignore(path, context) {
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// check extension whitelist first (cheap)
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if (!hasValidExtension(path, context)) { return true; }
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if (!('import/ignore' in context.settings)) { return false; }
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const ignoreStrings = context.settings['import/ignore'];
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for (let i = 0; i < ignoreStrings.length; i++) {
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const regex = new RegExp(ignoreStrings[i]);
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if (regex.test(path)) {
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log(`ignoring ${path}, matched pattern /${ignoreStrings[i]}/`);
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return true;
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}
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}
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return false;
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};
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/** @type {import('./ignore').hasValidExtension} */
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function hasValidExtension(path, context) {
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// eslint-disable-next-line no-extra-parens
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return validExtensions(context).has(/** @type {import('./types').Extension} */ (extname(path)));
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}
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exports.hasValidExtension = hasValidExtension;
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